Crossword Genius

Objective is not accruing money at bank? (13)

Ross

I believe the answer is:

disinterested

I'm a little stuck... Click here to teach me more about this clue!

'objective' is the definition.
(I've seen this before)

'is not accruing money at bank?' is the wordplay.
I cannot really understand how this works, but
'is' is present in the answer.
'not' could be 'nt' (synonyms) and 'nt' is present in the answer.
This explanation may well be incorrect...

Can you help me to learn more?

(Other definitions for disinterested that I've seen before include "Impartial" , "Desire dentist (anag) - free from partiality" , "Objective - uninvolved" , "With no axe to grind" , "Not expecting any profit" .)

I've seen this clue in The Telegraph.
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